diff --git a/gnss/common/utils/default/Utils.cpp b/gnss/common/utils/default/Utils.cpp
index 4e6a718..a519d3a 100644
--- a/gnss/common/utils/default/Utils.cpp
+++ b/gnss/common/utils/default/Utils.cpp
@@ -217,7 +217,8 @@
                        .biasUncertaintyNs = 47514.989972114563,
                        .driftNsps = -51.757811607455452,
                        .driftUncertaintyNsps = 310.64968328491528,
-                       .hwClockDiscontinuityCount = 1};
+                       .hwClockDiscontinuityCount = 1,
+                       .referenceSignalTypeForIsb = signalType};
 
     ElapsedRealtime timestamp = {
             .flags = ElapsedRealtime::HAS_TIMESTAMP_NS | ElapsedRealtime::HAS_TIME_UNCERTAINTY_NS,
diff --git a/gnss/common/utils/vts/Utils.cpp b/gnss/common/utils/vts/Utils.cpp
index da4c07f..4c725a8 100644
--- a/gnss/common/utils/vts/Utils.cpp
+++ b/gnss/common/utils/vts/Utils.cpp
@@ -20,12 +20,16 @@
 #include "gtest/gtest.h"
 
 #include <cutils/properties.h>
+#include <utils/SystemClock.h>
 
 namespace android {
 namespace hardware {
 namespace gnss {
 namespace common {
 
+using android::hardware::gnss::ElapsedRealtime;
+using android::hardware::gnss::GnssLocation;
+
 using namespace measurement_corrections::V1_0;
 using V1_0::GnssLocationFlags;
 
@@ -45,6 +49,50 @@
     return location.timestamp;
 }
 
+template <>
+void Utils::checkLocationElapsedRealtime(const V1_0::GnssLocation&) {}
+
+template <>
+void Utils::checkLocationElapsedRealtime(const android::hardware::gnss::GnssLocation& location) {
+    checkElapsedRealtime(location.elapsedRealtime);
+}
+
+void Utils::checkElapsedRealtime(const ElapsedRealtime& elapsedRealtime) {
+    ASSERT_TRUE(elapsedRealtime.flags >= 0 &&
+                elapsedRealtime.flags <= (ElapsedRealtime::HAS_TIMESTAMP_NS |
+                                          ElapsedRealtime::HAS_TIME_UNCERTAINTY_NS));
+    if (elapsedRealtime.flags & ElapsedRealtime::HAS_TIMESTAMP_NS) {
+        ASSERT_TRUE(elapsedRealtime.timestampNs > 0);
+    }
+    if (elapsedRealtime.flags & ElapsedRealtime::HAS_TIME_UNCERTAINTY_NS) {
+        ASSERT_TRUE(elapsedRealtime.timeUncertaintyNs > 0);
+    }
+}
+
+const GnssLocation Utils::getMockLocation(double latitudeDegrees, double longitudeDegrees,
+                                          double horizontalAccuracyMeters) {
+    ElapsedRealtime elapsedRealtime;
+    elapsedRealtime.flags =
+            ElapsedRealtime::HAS_TIMESTAMP_NS | ElapsedRealtime::HAS_TIME_UNCERTAINTY_NS;
+    elapsedRealtime.timestampNs = ::android::elapsedRealtimeNano();
+    elapsedRealtime.timeUncertaintyNs = 1000;
+    GnssLocation location;
+    location.gnssLocationFlags = 0xFF;
+    location.latitudeDegrees = latitudeDegrees;
+    location.longitudeDegrees = longitudeDegrees;
+    location.altitudeMeters = 500.0;
+    location.speedMetersPerSec = 0.0;
+    location.bearingDegrees = 0.0;
+    location.horizontalAccuracyMeters = horizontalAccuracyMeters;
+    location.verticalAccuracyMeters = 1000.0;
+    location.speedAccuracyMetersPerSecond = 1000.0;
+    location.bearingAccuracyDegrees = 90.0;
+    location.timestampMillis =
+            static_cast<int64_t>(kMockTimestamp + ::android::elapsedRealtimeNano() * 1e-6);
+    location.elapsedRealtime = elapsedRealtime;
+    return location;
+}
+
 const MeasurementCorrections Utils::getMockMeasurementCorrections() {
     ReflectingPlane reflectingPlane = {
             .latitudeDegrees = 37.4220039,
diff --git a/gnss/common/utils/vts/include/Utils.h b/gnss/common/utils/vts/include/Utils.h
index 4ea6cd6..7b89078 100644
--- a/gnss/common/utils/vts/include/Utils.h
+++ b/gnss/common/utils/vts/include/Utils.h
@@ -19,11 +19,13 @@
 
 #include <android/hardware/gnss/1.0/IGnss.h>
 #include <android/hardware/gnss/2.0/IGnss.h>
+#include <android/hardware/gnss/IGnss.h>
 #include <android/hardware/gnss/measurement_corrections/1.0/IMeasurementCorrections.h>
 #include <android/hardware/gnss/measurement_corrections/1.1/IMeasurementCorrections.h>
 #include <android/hardware/gnss/measurement_corrections/BnMeasurementCorrectionsInterface.h>
 
 #include <gtest/gtest.h>
+#include <type_traits>
 
 namespace android {
 namespace hardware {
@@ -32,8 +34,18 @@
 
 struct Utils {
   public:
+    static const int64_t kMockTimestamp = 1519930775453L;
+
     template <class T>
     static void checkLocation(const T& location, bool check_speed, bool check_more_accuracies);
+    template <class T>
+    static void checkLocationElapsedRealtime(const T& location);
+
+    static void checkElapsedRealtime(
+            const android::hardware::gnss::ElapsedRealtime& elapsedRealtime);
+
+    static const android::hardware::gnss::GnssLocation getMockLocation(
+            double latitudeDegrees, double longitudeDegrees, double horizontalAccuracyMeters);
     static const measurement_corrections::V1_0::MeasurementCorrections
     getMockMeasurementCorrections();
     static const measurement_corrections::V1_1::MeasurementCorrections
@@ -117,6 +129,8 @@
 
     // Check timestamp > 1.48e12 (47 years in msec - 1970->2017+)
     EXPECT_GT(getLocationTimestampMillis(location), 1.48e12);
+
+    checkLocationElapsedRealtime(location);
 }
 
 }  // namespace common